Acoustic Coupling

Movement of the tympanic membrane produces a sound pressure in the middle ear that is transmitted to the oval and round windows. Acoustic coupling is due to the difference in sound pressures acting on these areas. The pressure at each window is different because of the small distance between windows and the different orientation of each window relative to the tympanic membrane. In normal ears, the difference in pressures between the oval and round windows (acoustic coupling) is negligible.

In some diseased and reconstructed ears, the difference becomes significant and can greatly affect hearing. Specifically, when the ossicular chain is interrupted or absent, shielding of the round win dow results in redirection of all sound energy into the oval window.9 When this is performed, acoustic coupling plays a significant role in sound pressure conduction for cochlear stimulation.

Was this article helpful?

+1 0
Midsection Meltdown

Midsection Meltdown

Attention, Want 6 Pack Abs? Then Read Every Word On This Page... Revealed! Follow A Proven Plan To Unveil Your Six Pack Abs Today. Download today To Discover The Simple But Sure Way To 6 Pack Abs. This powerful tool will provide you with everything you need to finally achieve your dream of shedding the tummy fat for good and revealing your six pack abs. You can make weight loss promises to yourself all day and night, but actually sticking to your goals is the hard part.

Get My Free Ebook

Post a comment